Texas Instruments provides a layout and routing guide in the application note SLAA382, which includes recommendations for PCB layout, component placement, and routing to minimize noise and ensure optimal performance.
The ADS8344NG4 has high-speed digital outputs that require careful handling to prevent signal degradation and noise coupling. Use a low-impedance transmission line, keep the output traces short and away from noise sources, and use a termination resistor to match the output impedance.
Use a low-pass filter with a cutoff frequency below the Nyquist frequency (half the sampling rate) to remove high-frequency noise and aliasing. A simple RC filter or a more complex active filter can be used, depending on the specific application requirements.
Use a stable clock source, such as a crystal oscillator, and ensure that the clock signal is properly routed and terminated. Also, use the SYNC pin to synchronize the conversion process with other devices in the system, if necessary.
The recommended power-on sequence is to apply the analog supply voltage (AVCC) first, followed by the digital supply voltage (DVCC), and finally the clock signal. This ensures that the internal biasing and reference circuits are properly initialized.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
